Definitions of azo

  1. A combining form of azote
  2. Now especially applied to compounds containing a two atom nitrogen group uniting two hydrocarbon radicals, as in azobenzene, azobenzoic, etc. These compounds furnish many artificial dyes. See Diazo-.
  3. A combining form indicating the presence of nitrogen; as, azobenzene; often used separately; as, the, azo compounds.